Improvement in weather-strips for doors



UNITED STATES PATENT OEETQE.

IsAAc E. A. A. LYNCH, or EoxBUEY, MAssAcHusETTs.

IMPROVEMENT lN WEATHER-STRIPS FOR DOORS.

Specification forming part of Letters Patent No. 50,0l6dated September 19, 1865.

To all whom fit 'may concern.-

Be it known that I, ISAAC F. A. A. LYNCH, of Roxbury,in the county of Norfolk and State 0 oi Massachusetts, have invented an Improved Weather-Strip for Doors or Windows; and I do declare the same to be fully described in the following specication and represented in the accompanying drawings, in which- Figures 1 and 2 are front and rear views, and Fig. 3 is a transverse section, of it.

This weather-strip, like others in use, consists of a strip or belt ot' vulcanized indiarubber secured to and in a groove of a strip of wood and extending below it, so that when the said strip of wood is affixed to the lower part of a door the projecting part of the india-rubber strip may have its edge resting on the threshold of the door-frame, the purpose ot' the same being to prevent air and dust from making their way underneath the door and into the apartment to which such door may belong.

In carrying out my improvement, the strip of india-rubber orits equivalent is to go through its holder and extend therefrom in opposite directions, in manner as represented in Figs. 2 and 3, wherein the elasticl strip of rubber is shown at c c, and the holder is composed of two strips of wood, a b, having the rubber between them and connected together and to it by brads e e driven into them. rlhe part a. of the holder is to be rabbeted lengthwise in rear of the upper external portion of the rubber strip, the whole being triangular in section, and denoted at cl in Fig. 3. This rabbet, when the weatherstrip is laid against a door and confined thereto by screws, enables the said upper external portion of the strip c c to fall back and allow the rear surfaces ot the parts a b to be brought into close contact with the door. The upper extension part of the strip c c by its elasticity will be borne close against the door, and thus prevent any current of air from rushing into the apartment by passing downward between the door and the parts c b.

It is frequently the case, when the common weather-strip (consisting'of a strip of wood and a strip of india-rubber confined together by the rubber being inserted in a groove of the strip of wood) is afdxed to a door, that more or less air will descend through the joint between the strip and the door, but with my improvement such air will be excluded or be prevented from so passing.

That I claim is- 1. The improved weather-strip as made with the strip ot' elastic material or india-rubber c c to project in opposite directions from the lower and rear sides of the holder, substantially in manner as described.

2. In combination with the elastic strip c c, kto project from the rear part ot' the holder, as

described, the rabbet d, made in the holder and arran ged with reference to the said elastic strip, substantially as specified.

ISAAC F. A. A. LYNCH. Witnesses:

R. H. EDDY, F. P. HALE, Jr. 

